Scopaeus riedeli Frisch, 2022

Frisch, Johannes & Narakusumo, Raden Pramesa, 2022, Revision of Scopaeus Erichson, 1839 (Coleoptera, Staphylinidae, Paederinae) of Indonesia, with description of 19 new species, Soil Organisms 95 (1), pp. 23-73 : 29

publication ID	https://doi.org/ 10.25674/so95iss1id311
DOI	https://doi.org/10.5281/zenodo.10724254
persistent identifier	https://treatment.plazi.org/id/03B7C77A-FFC6-FFF2-BF72-FE6C0E760240
treatment provided by	Felipe
scientific name	Scopaeus riedeli Frisch
status	sp. nov.

Treatment

Scopaeus riedeli Frisch , spec. nov.

( Figs 4 View Figures 1–7 , 29 View Figures 27–34 , 56 –58 View Figures 56–61 , 121 View Figures 119–133 )

Type specimen: Holotype ♂, Indonesia, Sumatra, Lampung, South Lampung, SO Kalianda : Rajabasa Mts (05°46.656’S, 105°37.478’E), 1170 m, 15.8.2006, leg. Riedel ( MZB). GoogleMaps

Description: Habitus and coloring ( Fig. 4 View Figures 1–7 ) like in brachypterous, dark colored Scopaeus javanus ( Fig. 1 View Figures 1–7 ) and S. batukaruensis ( Fig. 3 View Figures 1–7 ). Holotype ( Fig. 4 View Figures 1–7 ) brachypterous, without palisade fringe. Total body length 2.9 mm; forebody length 1.6 mm.

Male: Abdominal sternites VII and VIII ( Fig. 121 View Figures 119–133 ) as in S. javanus ( Fig. 119 View Figures 119–133 ) and S. batukaruensis ( Fig. 120 View Figures 119–133 ). Aedeagus ( Figs 29 View Figures 27–34 , 56 – 58 View Figures 56–61 ) 0.7 mm long, distinguished from that of S. javanus and S. batukaruensis by ventrally inemarginate ( Fig. 56 View Figures 56–61 : arrow I), apicolaterally widened apical lobes ( Fig. 57 View Figures 56–61 : arrow III, Fig. 58 View Figures 56–61 ); different from aedeagus of S. javanus moreover by narrow, not lobiform apex of dorsal lobe ( Fig. 56 View Figures 56–61 : arrow II).

Female unknown.

Distribution: Scopaeus riedeli is known from the south of Sumatra only.

Etymology: The epithet riedeli (Latinized noun, derived from the surname ‘Riedel’, genitive, singular) is chosen in honor of Alexander Riedel, specialist of Indonesian Curculionidae at Staatliches Museum für Naturkunde Karlsruhe, Germany, who collected this new species in Sumatra.

Comment: Scopaeus javanus , S. batukaruensis and S. riedeli form a species group with allopatric distribution in the Sunda Islands. The species are linked by the similar habitus, wing-dimorphism ( Figs 1 – 4 View Figures 1–7 ) and the characteristic shape of the aedeagus with a strongly ventrad curved, from the apical lobes strongly projecting, distally extended dorsal lobe ( Figs 27 – 29 View Figures 27–34 , 50 – 58 View Figures 50–55 View Figures 56–61 ).